string palindrome 

#include <iostream>
#include <string>
using namespace std;

int main() {
    string str;
    string rev_str;
    getline(cin,str);
    string::reverse_iterator it;
    
    
    for(it=str.rbegin();it!=str.rend();it++){
        rev_str += *it;
    }
    
    
    if(rev_str==str)
        cout<<"palindrome";
        
    else
        cout<<"not a palindrome";
    return 0;
}